Loading fault codes...

On this page you can find the meaning of the fault code you may be seeing coming from your Honda.

Either choose your model from below or scroll down even further to search and see popular fault codes across all Hondas.

Honda Models

(click your model)

Search Honda Codes

Do you know the fault code already? Enter it in the box below and hit "Search Codes".

7/10

Error Icon P0420

Catalyst System Efficiency Below Threshold (Bank 1)

Learn More Fixes
6/10

Error Icon P3400

Cylinder Deactivation System Bank 1

Learn More Fixes

Error Icon P1457

EVAP Emission Control System Leak Detected (Control Canister System)

Learn More
3/10

Error Icon P0325

Knock Sensor 1 Circuit (Bank 2 or Single Sensor)

Learn More Fixes

Error Icon B1240

Wiper Washer Rear Pump Relay Circuit Failure

Learn More

Error Icon P2646

Rocker Arm Actuator System Performance

Learn More

Error Icon P0497

Evaporative Emission System Low Purge Flow

Learn More

Error Icon P2647

Rocker Arm Actuator System Stuck on Bank 1

Learn More
7/10

Error Icon P0134

O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

Learn More Fixes

Error Icon P0847

Transmission Fluid Pressure Sensor/Switch B Circuit Low

Learn More

Error Icon U0121

Lost Communication With Anti-Lock Brake System (ABS) Control Module

Learn More
9/10

Error Icon U0100

Lost Communication With ECM/PCM "A"

Learn More Fixes
7/10

Error Icon U0155

Lost Communication With Instrument Panel Cluster (IPC) Control Module

Learn More Fixes

Error Icon U0122

Lost Communication With Vehicle Dynamics Control Module

Learn More

Error Icon U0151

Lost Communication With Restraints Control Module

Learn More
9/10

Error Icon U0073

Control Module Communication Bus "A" Off

Learn More Fixes

Error Icon U0101

Lost Communication with TCM

Learn More

Error Icon P2004

Intake Manifold Runner Control (IMRC )

Learn More

Error Icon P2279

Intake Air System Leak

Learn More

Error Icon P1399

Glow Plug Circuit High Side, High Input

Learn More

Error Icon P1456

EVAP Emission Control System Leak Detected (Fuel Tank System)

Learn More

Error Icon P1259

VTEC System Malfunction

Learn More

Error Icon P1157

Lack Of HO2S22 Switch - Sensor Indicates Lean

Learn More

Error Icon P1298

Electrical Load Detector Circuit High Input

Learn More

Error Icon P1381

Cylinder Position Sensor Intermittent Interruption

Learn More

Error Icon P1236

Fuel Pump Control Out Of Range

Learn More

Error Icon P1448

ELC System 2 Fault

Learn More

Error Icon P1890

Automatic Transaxle Concerns

Learn More

Error Icon P1361

Intermittent Interruption In TDC 1 Sensor Circuit

Learn More

Error Icon P1491

EGR Valve Lift Insufficient Detected

Learn More
7/10

Error Icon P0010

Intake Camshaft Position Actuator Circuit / Open (Bank 1)

Learn More Fixes
9/10

Error Icon P0011

Intake Camshaft Position Timing - Over-Advanced (Bank 1)

Learn More Fixes
9/10

Error Icon P0012

Intake Camshaft Position Timing - Over-Retarded (Bank 1)

Learn More Fixes
7/10

Error Icon P0013

Exhaust Camshaft Position Actuator Circuit / Open (Bank 1)

Learn More Fixes
8/10

Error Icon P0014

Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)

Learn More Fixes
8/10

Error Icon P0016

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor A

Learn More Fixes
8/10

Error Icon P0017

Crankshaft Position Camshaft Position Correlation Bank 1 Sensor B

Learn More Fixes
4/10

Error Icon P0036

Heated Oxygen Sensor (HO2S) Heater Control Circuit Bank 1 Sensor 2

Learn More Fixes
4/10

Error Icon P0102

Mass or Volume Air Flow Circuit Low Voltage Input

Learn More Fixes
8/10

Error Icon P0106

Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem

Learn More Fixes
8/10

Error Icon P0113

Intake Air Temperature Circuit High Input

Learn More Fixes
4/10

Error Icon P0128

Coolant Thermostat (Coolant Temp Below Thermostat Regulating Temperature)

Learn More Fixes
6/10

Error Icon P0131

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)

Learn More Fixes
6/10

Error Icon P0135

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

Learn More Fixes
4/10

Error Icon P0137

O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)

Learn More Fixes
6/10

Error Icon P0138

O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)

Learn More Fixes
6/10

Error Icon P0141

O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)

Learn More Fixes
7/10

Error Icon P0171

System Too Lean (Bank 1)

Learn More Fixes
5/10

Error Icon P0172

System Too Rich (Bank 1)

Learn More Fixes
5/10

Error Icon P0175

System Too Rich (Bank 2)

Learn More Fixes
9/10

Error Icon P0300

Random/Multiple Cylinder Misfire Detected

Learn More Fixes
8/10

Error Icon P0301

Cylinder 1 Misfire Detected

Learn More Fixes
8/10

Error Icon P0302

Cylinder 2 Misfire Detected

Learn More Fixes
8/10

Error Icon P0303

Cylinder 3 Misfire Detected

Learn More Fixes
8/10

Error Icon P0304

Cylinder 4 Misfire Detected

Learn More Fixes
8/10

Error Icon P0305

Cylinder 5 Misfire Detected

Learn More Fixes
8/10

Error Icon P0306

Cylinder 6 Misfire Detected

Learn More Fixes
8/10

Error Icon P0332

Knock Sensor 2 Circuit Low Input (Bank 2)

Learn More Fixes
8/10

Error Icon P0335

Crankshaft Position Sensor A Circuit Malfunction

Learn More Fixes
6/10

Error Icon P0341

Camshaft Position Sensor Circuit Range/Performance

Learn More Fixes
7/10

Error Icon P0401

Exhaust Gas Recirculation Flow Insufficient Detected

Learn More Fixes
7/10

Error Icon P0430

Catalyst System Efficiency Below Threshold (Bank 2)

Learn More Fixes
3/10

Error Icon P0441

Evaporative Emission Control System Incorrect Purge flow

Learn More Fixes
3/10

Error Icon P0442

Evaporative Emission Control System Leak Detected

Learn More Fixes
3/10

Error Icon P0446

Evaporative Emission Control System Vent Control Circuit Malfunction

Learn More Fixes
4/10

Error Icon P0449

Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

Learn More Fixes
4/10

Error Icon P0455

System Gross Leak Evaporative Emission

Learn More Fixes
3/10

Error Icon P0456

Evaporative Emissions System Small Leak Detected

Learn More Fixes
5/10

Error Icon P0463

Fuel Level Sensor Circuit High Input

Learn More Fixes
3/10

Error Icon P0496

Evaporative Emission System High Purge Flow

Learn More Fixes
3/10

Error Icon P0507

Idle Control System RPM higher Than Expected

Learn More Fixes
9/10

Error Icon P0700

Transmission Control System Malfunction

Learn More Fixes
7/10

Error Icon P2096

Post Catalyst Fuel Trim System Too Lean Bank 1

Learn More Fixes
6/10

Error Icon P2097

Post Catalyst Fuel Trim System Too Rich Bank 1

Learn More Fixes
9/10

Error Icon P2135

Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation

Learn More Fixes
9/10

Error Icon P2138

Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation

Learn More Fixes
7/10

Error Icon P219A

Bank 1 Air/Fuel Ratio Imbalance

Learn More Fixes
Honda Logo

Honda is a Japanese automaker that is known for its value-for-money, easy maintenance and reliability.

They have a wide range of automobiles as well as motorcycles and other vehicles.

You may experience a fault code at some point when you own a Honda such as the dreaded P3400. This code appears when the car is trying to direct your attention to the cylinder deactivation system – also known as “limp-home mode”. The code could be caused by the system being activated to protect the engine or it could be signaling that the system itself is faulty. It is definitely worth getting this checked out by a professional if it is the only error code appearing on your OBD2 reader.

Among many Honda models, you can also expect to see the U0121 error code appear. This U0121 code relates to the ABS and a potential electrical problem being detected in this important system. It is most likely pointing to the fact that the ECM (engine control module) is unable to communicate with the ABS itself, putting the car in a dangerous position for its occupants.

Another common fault code in Hondas is the P1236 – caused by a sensor detecting too much pressure in the turbocharger. This could turn into an expensive fix as the valve that relieves the turbocharger of excess pressure could be faulty. If the turbocharger continues to over-boost it could damage the delicate (and expensive) components inside of it and send metal into other parts of the car causing even more damage.

  • Models: 14